/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.kylin.common.util;

import java.util.List;

public class MathUtil {

    private MathUtil() {
        throw new IllegalStateException("Class MathUtil is an utility class !");
    }

    public static double findMedianInSortedList(List<Double> m) {
        int middle = m.size() / 2;
        if (m.size() % 2 == 1) {
            return m.get(middle);
        } else {
            return (m.get(middle - 1) + m.get(middle)) / 2.0;
        }
    }
}
